gcc/testsuite/gcc.target/i386/rotate-3.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O3 -mavx2 -fdump-tree-vect-details" } */
   3 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
   4
   5 unsigned int a[1024] __attribute__((aligned (32)));
   6
   7 __attribute__((noinline, noclone)) void
   8 foo (void)
   9 {
  10   int i;
  11   for (i = 0; i < 1024; i++)
  12     {
  13       int j = i & 31;
  14       a[i] = (a[i] << j) | (a[i] >> ((-j) & 31));
  15     }
  16 }